65 lines
2.3 KiB
C#
65 lines
2.3 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using OpenRa.Game.GameRules;
|
|
using OpenRa.Game.Effects;
|
|
using OpenRa.Game.Traits;
|
|
|
|
namespace OpenRa.Game
|
|
{
|
|
static class Combat /* some utility bits that are shared between various things */
|
|
{
|
|
public static void DoImpact(int2 loc, int2 visualLoc,
|
|
WeaponInfo weapon, ProjectileInfo projectile, WarheadInfo warhead, Actor firedBy)
|
|
{
|
|
var targetTile = ((1f / Game.CellSize) * loc.ToFloat2()).ToInt2();
|
|
|
|
var isWater = Game.IsWater(targetTile);
|
|
var hitWater = Game.IsCellBuildable(targetTile, UnitMovementType.Float);
|
|
|
|
if (warhead.Explosion != 0)
|
|
Game.world.AddFrameEndTask(
|
|
w => w.Add(new Explosion(visualLoc, warhead.Explosion, hitWater)));
|
|
|
|
var impactSound = warhead.ImpactSound;
|
|
if (hitWater && warhead.WaterImpactSound != null)
|
|
impactSound = warhead.WaterImpactSound;
|
|
if (impactSound != null) Sound.Play(impactSound + ".aud");
|
|
|
|
if (!isWater) Smudge.AddSmudge(targetTile, warhead);
|
|
if (warhead.Ore) Ore.Destroy(targetTile.X, targetTile.Y);
|
|
|
|
var maxSpread = GetMaximumSpread(weapon, warhead);
|
|
var hitActors = Game.FindUnitsInCircle(loc, maxSpread);
|
|
|
|
foreach (var victim in hitActors)
|
|
victim.InflictDamage(firedBy, (int)GetDamageToInflict(victim, loc, weapon, warhead));
|
|
}
|
|
|
|
static float GetMaximumSpread(WeaponInfo weapon, WarheadInfo warhead)
|
|
{
|
|
return (int)(warhead.Spread * Math.Log(weapon.Damage, 2));
|
|
}
|
|
|
|
static float GetDamageToInflict(Actor target, int2 loc, WeaponInfo weapon, WarheadInfo warhead)
|
|
{
|
|
/* todo: some things can't be damaged AT ALL by certain weapons! */
|
|
var distance = (target.CenterLocation - loc).Length;
|
|
var rawDamage = weapon.Damage * (float)Math.Exp(-distance / warhead.Spread);
|
|
var multiplier = warhead.EffectivenessAgainst(target.Info.Armor);
|
|
|
|
return rawDamage * multiplier;
|
|
}
|
|
|
|
public static bool WeaponValidForTarget(WeaponInfo weapon, Actor target)
|
|
{
|
|
var projectile = Rules.ProjectileInfo[weapon.Projectile];
|
|
|
|
if (projectile.ASW) return false; // we don't support ASW yet. change this when subs can be identified.
|
|
if (projectile.AA && target.traits.Contains<Helicopter>()) return true;
|
|
return projectile.AG;
|
|
}
|
|
}
|
|
}
|